Handle loading of external resources documents Leave feedback
GroupDocs.Parser provides the functionality to handle loading of HTML external resources.
Here are the steps to handle loading of HTML external resources.
- Instantiate the ParserSettings object and pass External Resource Handler;
- Create Parser object and call GetImages method.
The following code sample shows how to handle loading of HTML external resources.
// Create an instance of ParserSettings to pass External Resource Handler
ParserSettings settings = new ParserSettings(new Handler());
// Create an instance of Parser class to generate spreadsheet page previews
try (Parser parser = new Parser(Constants.SampleHtmlWithImages, settings)) {
// Extract images from HTML document
Iterable<PageImageArea> images = parser.getImages();
// Iterate over extracted images
for (PageImageArea i : images) {
// Print the type of image
System.out.println(i.getFileType());
}
}
/**
* This class provides the ability to filter extracted images.
**/
class Handler extends ExternalResourceHandler {
// Called before any external resource loads. It allows to skip unnecessary file loading.
@Override
public void onLoading(ExternalResourceLoadingArgs args) {
// Check if the file name ends with installation.png
if (!args.getUri().endsWith("installation.png")) {
// Otherwise skip this file
args.setSkipped(true);
}
super.onLoading(args);
}
}
You may easily run the code above and see the feature in action in our GitHub examples:
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